Question: To test whether the mean amount of output is the same for machines produced by three manufacturers, a company manager uses the three machines to produce four different batches.

He uses his computer to generate the following summary statistics from the data:

Use either the data or summary statistics (vie formulas) to test whether the population means for the machine outputs differ for the three manufacturers. Use a = 0.05. Show all five steps of the hypothesis testing process. Points will be deducted for missing parts; however, this may be done using the data and calculator functions. (State which calculator menus were used.).